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Ceramic PTC Resettable Fuses - CMF-SD Series | Bourns

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Bourns Ceramic PTC Resettable FusesBourns® ceramic PTC (CMF-SD series) devices provide telecommunication equipment resettable protection from current surges that occur due to lightning strikes or through interaction with the AC power network. Bourns dual-packaged ceramic PTC offers telecom equipment designers two resistance matched CPTCs in a single surface mount component that significantly reduces assembly time and occupied board space. Telecom equipment may be damaged by current surges that occur due to lightning strikes or through interaction with the AC power network. Bourns® ceramic PTC devices provide telecommunication equipment resettable protection from these events. The Ceramic PTC thermistors have been designed to match and compliment the Bourns® family of TISP® thyristor-based overvoltage protection devices. In combination, Bourns® components can now provide equipment manufacturers with a total telecom circuit protection solution, which will aid equipment and comply with various global telecommunication and equipment standards:
  • ITU-T K.20/21/45
  • Telcordia GR-1089-CORE
  • UL 60950, 3rd Ed<>

    Bourns® Circuit Protection Division dual surface mount range of Ceramic PTC thermistors combines two resistance matched Ceramic PTCs together in a single ceramic housing. At present 25, 35 and 50 ohm components are available as standard, other resistance values and tolerances are available on request

Features & Benefits:

  • Two resistance-matched PTCs in a ceramic housing
  • Aids compliance with ITU-T K.20/21/45 Telcordia GR-1089-CORE UL 60950, 3rd Ed
  • Narrow resistance tolerance
  • RoHS Compliant

Applications:

  • Set-top Boxes
  • Modems
  • Line Cards
  • VoIP Cards
  • MDF Modules
  • LAN Equipment

Additional Information: